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EWG's Tap Water Database — 2021 UPDATE

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Chloromethane

Ocean Pines

Chloromethane is an industrial solvent, aerosol propellant and a refrigerant. It also forms as a byproduct of water disinfection. The EPA classifies chloromethane as possibly carcinogenic to humans.

 

12

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2013ND50ND
2014ND70ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 2.69 ppb

The EWG Health Guideline of 2.69 ppb for chloromethane was defined by the Environmental Protection Agency as a benchmark for testing under the Unregulated Contaminant Monitoring Rule program. This health guideline protects against cancer.

ppb = parts per billion

All test results

Date Lab ID Result
2013-11-1235115903001AMND
2013-11-1235115905001AMND
2013-11-1235115909001AMND
2013-11-1335116107001AMND
2013-11-1335116107005AMND
2014-04-300230005_03_04825ND
2014-05-1435138174001AMND
2014-05-1435138218001AMND
2014-05-1435138224001AMND
2014-05-1435138176001AMND
2014-05-1535138178001AMND
2014-06-100230005_04_05373ND